This report investigates the impact of potential misclassification of samples on HIV prevalence estimates for 23 surveys conducted from 2010-2014. In addition to visual inspection of laboratory results, we examined how accounting for potential misclassification of HIV status through Bayesian latent ...class models affected the prevalence estimates. Two types of Bayesian models were specified: a model that only uses the individual dichotomous test results and a continuous model that uses the quantitative information of the EIA (i.e., the signal-to-cutoff values). Overall, we found that adjusted prevalence estimates matched the surveys’ original results, with overlapping uncertainty intervals. This suggested that misclassification of HIV status should not affect the prevalence estimates in most surveys. However, our analyses suggested that two surveys may be problematic. The prevalence could have been overestimated in the Uganda AIDS Indicator Survey 2011 and the Zambia Demographic and Health Survey 2013-14, although the magnitude of overestimation remains difficult to ascertain. Interpreting results from the Uganda survey is difficult because of the lack of internal quality control and potential violation of the multivariate normality assumption of the continuous Bayesian latent class model. In conclusion, despite the limitations of our latent class models, our analyses suggest that prevalence estimates from most of the surveys reviewed are not affected by sample misclassification.
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SARS-CoV-2 infections among children and adolescents cause less severe illness and fewer deaths compared to adults. While a less severe course of infection is a positive outcome, there are concerns that mild symptoms may have led to less testing, resulting in fewer identified cases of COVID-19 in ch...ildren. If children with mild or no symptoms transmit the disease, they may act as drivers of transmission within their communities. Understanding symptoms, infectivity and patterns of SARS-CoV-2 transmission in children and adolescents is essential for developing, adapting and improving control measures for COVID-19 across all ages. This is a summary of the current knowledge around SARS-CoV-2 infection acquisition and transmission and COVID-19 disease symptoms in children and adolescents. It aims to inform decisions, based on local contexts, on how to best keep schools, kindergarten and day-care facilities open and what advice to apply to intergenerational mixing.
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Summary of research into the consequences of the Ebola outbreak for children and communities in Liberia and Sierra Leone
The growing understanding of how sequence information can contribute to improved public health is driving global investments in sequencing facilities and programmes. The falling cost and complexity of generating GSD provides opportunities for expanding sequencing capacity; however, challenges to wid...espread implementation remain. This document provides policy-makers and stakeholders with guidance on how to maximize the public health benefit of SARS-CoV-2 genomic sequencing activities in the short and long term as the pandemic continues to unfold. Practical considerations for the implementation of a virus genomic sequencing programme and an overview of the public health objectives of genomic sequencing are covered. This guidance focuses on SARS-CoV-2 but is applicable to other pathogens of public health concern.
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Senegal’s substantial and sustained progress against malaria is an inspiring public health success story, and a source of potential lessons for other countries on the path to elimination. This case study describes three major success factors—(1) outstanding leadership and partner engagement, (2)... the achievement and maintenance of high intervention coverage levels, and (3) a thriving data culture—and explores several exciting new opportunities to consolidate and expand upon Senegal’s two decades of impact.
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The COVID-19 pandemic exposed critical gaps in the global response to health crises, particularly in the financing of pandemic prevention, preparedness, response, recovery, and reconstruction. This chapter presents a comprehensive framework for pandemic financing that spans the entire pandemic cycle..., emphasizing the need for timely, adequate, and effective financial resources. The framework is designed to support
policymakers in both low- and middle-income countries (LMICs) and high-income nations, providing a guide to appropriate financing tools for each stage of a pandemic, from prevention and preparedness to response and recovery. Key economic concepts such as global public goods, time preference, and incentives are explored to underscore the complexities of pandemic financing.
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L'objectif de ce projet pilote est de mitiger l’ampleur et l’impact de flambées de choléra à grande échelle en République démocratique du Congo (RDC). Avec 13 000 cas suspects et 236 décès notifiés depuis le début de l’année 2022, le choléra demeure un problème de santé publique ...en RDC. La mise en œuvre d’un plan d'action anticipatoire, qui consiste en des interventions ciblées dans les domaines de l'eau, de l'assainissement, de l’hygiène et de la santé, sera accompagnée d'un programme d'apprentissage complet visant à comprendre l'efficacité, adaptabilité et la dimension éthique du projet pilote.
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Série de bulletins techniques
Tuberculose et co-infection par le VIH | 1 - 3
Accessed November 2017
Orientations provisoires, 27 mai 2021